This is a standard orrery but instead of celestial bodies orbiting a sun, it has nine orreries orbiting an orrery. These orreries have orreries for planets as well. And those orreries ... etc, etc.

One day, when this Orrery fixation passes, newbies will not know of the day 5 separate Orrery ideas
graced the Half Bakery's main index. This monumental occasion shall, forever more be immortalized in this idea ...

Surely an orrerry of orrrerrries would actually be a scale model of the geographical distribution of actual orreries? As with an orrery, where the precise internal details of each planet are not reproduced but are represented by a plain ball, so in an orrierie of orroroes each ororrei is represented by a plain disc. It would also be a little dull to look at since there would be very little movement, most orreries not being noted for their travels.

Also, just as an orieroie approxiamtes the total number of bodies in the solar system, so an oysterie of oyeahs would approximate the totality of orribles by only depicting the biggest and most notable examples, such as those antique ones in the science museums of Oxford and London. More expensive models display more individual examples and include extra minuscule gearing to represent the museum examples being transported to the museum stores for conservation etc. Also an incremental ratchet for continental drift.

Seriously though, they are self-similar. Stars orbit the centres of galaxies, some of them orbit each other, planets orbit stars, satellites orbit planets, then there can be a gap (unless you count co-orbitals), then there are atoms.

An orrery of orreries, like the old SF idea that electrons were universes in themselves, made of electrons that were also universes, and so on. Or a modern idea in cosmology, where every black hole is the beginning of a new universe, so that the most likely universe has evolved through countless generations to produce the maximum number of black holes.